Datasheet

I/O ports ST7LITE20F2 ST7LITE25F2 ST7LITE29F2
70/170 DocID8349 Rev 7
Note: On ports where the external interrupt capability is selected using the EISR register, the
configuration will be as follows:
Interrupt ports
Open drain output 1 0
Push-pull output 1 1
Table 27. Port configuration (standard ports)
Port Pin name
Input Output
OR = 0 OR = 1 OR = 0 OR = 1
Port A PA7:0 Floating Pull-up Open drain Push-pull
Port B PB6:0 Floating Pull-up Open drain Push-pull
Table 26. Ports PA7:0, PB6:0 (continued)
Mode DDR OR
Table 28. Port configuration (Interrupt ports)
Port Pin name
Input Output
OR = 0 OR = 1 OR = 0 OR = 1
Port A PA7:0 Floating Pull-up interrupt Open drain Push-pull
Port B PB6:0 Floating Pull-up interrupt Open drain Push-pull
Table 29. Ports where the external interrupt capability selected using the EISR
register
Mode DDR OR
Floating input 0 0
Pull-up interrupt input 0 1
Open drain output 1 0
Push-pull output 1 1
Table 30. I/O port register map and reset values
Address
(Hex.)
Register
label
76543210
0000h
PADR
Reset value
MSB
1111111
LSB
1
0001h
PADDR
Reset value
MSB
0000000
LSB
0
0002h
PAOR
Reset value
MSB
0100000
LSB
0